Natural Gas Supply Line.

I plan to install gas logs in my fireplace. The fireplace has book shelves, with bottom cabinet, on either side and the cleanest installation would be to drill through the bottom cabinet shelf and exit in the corner of the face and harth brick.
For a clean look, I would like for the gas shutoff valve to be inside the cabinet. The valve will be approximately three foot from the logs.
I know different areas have different codes, but as a gerneral rule, would this be ok?